"For all the air that's in your lungs,
For all the joy that is to come,
For all the things that you're alive to feel,
Just let the pain remind you hearts can heal."
And Darling, we all have a little demon called "sadness" sleeping in all of us. You may not know it but it attacks sometimes, if not always, randomly and openly. It will call upon its henchmen "grief", "stress" or "heartbreak", to name a few out of many others. They will bite you individually, or all at once. Your head or heart may ache; your eyes are going to bleed salty tears.
But let me assure you- everything will be okay. The pain of this world is temporary. Never take it seriously. You are not yet a goner, and you won't be as long as you find and keep hope. Your hope may come in an animal, a person, an experience. And you will learn from it.
My dear, it is okay to feel empty once in a while. It only proves more that there is more space for many, newer things out there that can fill you up. To be honest, it does not mean you're greedy either, it only means your capacity as a better living person has grown. And you are going to love searching for things that make you happy; for happiness.
The negatives need to be there and it is impossible to extinguish them because they put a flag to what is the positive, and vice versa. This world is a magnet, and opposites attract. You may be a negative person but you'll mostly fall in love with a positive person, because he or she will get the magnetic pull inside them that you'll need them. You may be a positive person and you'll fall in love with s negative person, to save him from living the lonely, outcast life. Zen is never acquired without ying or yang; colors can never be achieved without black or white. Feelings can never be feelings without sadness or happiness. Life won't be life without death or survival.
To top it off, I'd like to say everything tomorrow will always end up better than yesterday. If it's not tomorrow, then the day after tomorrow, and so forth. You just need to have the will and the hope for it all. You'll be better than okay, stronger than fine. It might take you a day, or years.
Never stop living. Take all the time you need.
Quoted from Paramore's "Hate to see your heart break", which is a very good song and i recommend it to everyone to listen to.
Don't be afraid of sadness. It will cover you but you have the hope, will and power to control it. Don't be afraid of happiness, in fear of it leaving too soon. Drink in, savor, soak in the humanistic nature of both. You're not alive if you have one but the other. The healthy are balanced.